Reamers

Reamers

Made in USA since 1992

Common reamer types

Chucking Reamers
Chucking Reamers The workhorse — machine reaming to size HSS, cobalt or carbide Best for Finishing drilled or bored holes to tolerance
Dowel Pin Reamers
Dowel Pin Reamers Sized for standard dowel pin fits HSS or cobalt Best for Tooling, fixturing and mold alignment
Expansion Reamers
Expansion Reamers Screw expands the head to restore size Straight or taper shank Best for Long service where regrinding pays
Hand Reamers
Hand Reamers Turned by hand, not under power Straight flute or left-hand spiral Best for Fitting, repair and toolroom work
Taper Pin Reamers
Taper Pin Reamers Cuts the taper for standard taper pins Straight, LH spiral or LH helical Best for Pinning gears and pulleys to shafts

Specialty reamers

HSS Safety Reamers LH Spiral
HSS Safety Reamers LH Spiral Hex shank, 1-1/16 to 2 inch Tapered point enters misaligned holes Best for Heavy structural steel assembly
HSS Capscrew Counterbores
HSS Capscrew Counterbores Flat-bottomed seat for a socket head Built-in pilot holds alignment Best for Recessing capscrews flush or below surface
HSS Bridge Reamers LH Spiral
HSS Bridge Reamers LH Spiral Taper shank with a pilot point Left-hand spiral, right-hand cut Best for Aligning bolt holes in structural steel
HSS Construction Reamers LH Spiral
HSS Construction Reamers LH Spiral Flatted shank, black and gold oxide Left-hand spiral, right-hand cut Best for Bolt clearance holes in beams and chassis
HSS Taper Pipe
HSS Taper Pipe Reams the taper before pipe tapping 6 to 12 flute options Best for Dryseal and ANPT thread preparation

Atlas Cutting Tools carries one of the most complete ranges of reamers in the industry. Shop Chucking Reamers (straight flute and spiral flute, in HSS, Cobalt, and Carbide), Dowel Pin Reamers, Expansion Reamers, Hand Reamers, Taper Pin Reamers, and specialty items like Bridge Reamers, Capscrew Counterbores, Construction Reamers, Safety Reamers, and Taper Pipe Reamers.

Reamers are precision-ground for tight tolerance hole finishing after drilling or boring, and material choice matters: HSS suits general-purpose work, Cobalt holds up better in stainless and tougher alloys, and Carbide delivers the longest tool life in high-volume production. All reamers are USA manufactured, and most sizes ship the same day with a 97% fill rate.

  • Compare SKU Vendor Size (D1) Decimal Equivalent (D1) Flute Diameter (D1) Shank Diameter (D2) Pilot Length (L2) Pilot Diameter (D3) Flute Length (L2) Overall Length (L1) Total Reach (L3) Axial Chamfer Morse Taper Small Diameter Large Diameter Body Length (L3) Size of Square Hex Shank Diameter Number of Flutes Coating In Stock Price Quantity
    A78695 ACT 11.5mm 0.4528 0.373 1-3/4 7 6 Uncoated 14
    $43.62
  • A51773 ACT 0.178 0.1755 1-1/8 4-1/2 6 Uncoated 12
    $25.20
  • A50417 ACT 0.2515 0.2515 1 3 1-3/4 0.0250 4 Uncoated 33
    $82.14
  • A51774 ACT 0.1785 0.1755 1-1/8 4-1/2 6 Uncoated 11
    $25.11
  • A50418 ACT 0.2520 0.2520 1 3 1-3/4 0.0250 4 Uncoated 73
    $65.77
  • A78696 ACT 29/64 0.4531 0.373 1-3/4 7 6 Uncoated 13
    $43.78
  • A51775 ACT 0.179 0.1755 1-1/8 4-1/2 6 Uncoated 29
    $25.20
  • A50419 ACT 0.2530 0.2530 1 3 1-3/4 0.0250 4 Uncoated 100
    $65.77
  • A51776 ACT 0.1795 0.1755 1-1/8 4-1/2 6 Uncoated 11
    $25.20
  • A50420 ACT 0.2540 0.2540 1 3 1-3/4 0.0250 4 Uncoated 14
    $65.77
  • A51777 ACT 0.1805 0.1755 1-1/8 4-1/2 6 Uncoated 20
    $25.20
  • A50421 ACT 0.2550 0.2550 1 3 1-3/4 0.0250 6 Uncoated 21
    $65.77
  • A78697 ACT 12.0mm 0.4724 0.4355 2 8 6 Uncoated 13
    $43.62
  • A51778 ACT 0.181 0.1755 1-1/8 4-1/2 6 Uncoated 63
    $25.20
  • A50422 ACT 6.5mm 0.2559 6.500 1-1/8 3-1/4 47mm 0.0300 6 Uncoated 8
    $69.60
  • A51779 ACT 0.1815 0.1755 1-1/8 4-1/2 6 Uncoated 15
    $25.20
  • A50423 ACT 0.2560 0.2560 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 13
    $80.16
  • A78698 ACT 31/64 0.4844 0.4355 2 8 6 Uncoated 2
    $43.62
  • A51780 ACT 0.1825 0.1805 1-1/8 4-1/2 6 Uncoated 15
    $25.11
  • A50424 ACT F 0.2570 0.2570 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 37
    $80.16
  • A51781 ACT 0.183 0.1805 1-1/8 4-1/2 6 Uncoated 24
    $25.20
  • A50425 ACT 0.2580 0.2580 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 15
    $80.16
  • A78699 ACT 12.5mm 0.4921 0.4355 2 8 6 Uncoated 3
    $43.62
  • A51782 ACT 0.1835 0.1805 1-1/8 4-1/2 6 Uncoated 14
    $25.11
  • A50426 ACT 0.2590 0.2590 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 9
    $80.16
  • A51783 ACT 0.184 0.1805 1-1/8 4-1/2 6 Uncoated 10
    $25.20
  • A50427 ACT 0.2600 0.2600 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 18
    $80.16
  • A78700 ACT .499 O/U 0.499 0.4355 2 8 6 Uncoated 7
    $43.78
  • A51784 ACT 0.1845 0.1805 1-1/8 4-1/2 6 Uncoated 22
    $25.20
  • A50428 ACT G 0.2610 0.2610 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 14
    $80.16
  • A51785 ACT 0.1855 0.1805 1-1/8 4-1/2 6 Uncoated 8
    $25.20
  • A50429 ACT 0.2620 0.2620 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 22
    $80.16
  • A51786 ACT 0.186 0.1805 1-1/8 4-1/2 6 Uncoated 21
    $25.20
  • A50430 ACT 0.2630 0.2630 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 16
    $80.16
  • A78701 ACT .501 O/U 0.501 0.4355 2 8 6 Uncoated 19
    $43.78
  • A51787 ACT 0.187 0.1805 1-1/8 4-1/2 6 Uncoated 42
    $25.20
  • A50431 ACT 0.2640 0.2640 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 3
    $80.16
  • A51788 ACT 0.188 0.1805 1-1/8 4-1/2 6 Uncoated 100
    $31.71
  • A50432 ACT 0.2650 0.2650 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 3
    $80.16
  • A78702 ACT 17/32 0.5313 0.4355 2 8 6 Uncoated 2
    $51.32
  • A51789 ACT 0.1895 0.186 1-1/4 5 6 Uncoated 62
    $31.71
  • A50433 ACT 17/64 0.2656 0.2656 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 100
    $71.99
  • A51790 ACT 0.19 0.186 1-1/4 5 6 Uncoated 34
    $31.71
  • A50434 ACT H 0.2660 0.2660 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 22
    $80.16
  • A51791 ACT 0.1905 0.186 1-1/4 5 6 Uncoated 19
    $31.71
  • A50435 ACT 0.2670 0.2670 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 43
    $80.16
  • A51792 ACT 0.1915 0.186 1-1/4 5 6 Uncoated 10
    $31.71
  • A50436 ACT 0.2680 0.2680 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 14
    $80.16
  • A51793 ACT 0.192 0.186 1-1/4 5 6 Uncoated 18
    $31.71
  • A50437 ACT 0.2690 0.2690 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 2
    $80.16
  • A51794 ACT 0.1925 0.186 1-1/4 5 6 Uncoated 17
    $31.71
  • A50438 ACT 0.2700 0.2700 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 13
    $80.16
  • A51795 ACT 0.193 0.186 1-1/4 5 6 Uncoated 28
    $31.71
  • A50439 ACT 0.2710 0.2710 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 27
    $79.71
  • A51796 ACT 0.194 0.1895 1-1/4 5 6 Uncoated 20
    $31.71
  • A50440 ACT I 0.2720 0.2720 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 29
    $80.16
  • A51797 ACT 0.1945 0.1895 1-1/4 5 6 Uncoated 17
    $31.71
  • A50441 ACT 0.2730 0.2730 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 12
    $79.71
  • A78703 ACT 25/32 0.7813 0.624 2-1/2 9-1/2 8 Uncoated 3
    $84.31
  • A51798 ACT 0.195 0.1895 1-1/4 5 6 Uncoated 22
    $31.71
  • A50442 ACT 0.2740 0.2740 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 14
    $80.16
  • A51799 ACT 0.1955 0.1895 1-1/4 5 6 Uncoated 24
    $31.71
  • A50443 ACT 0.2750 0.2750 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 23
    $80.16
  • A51800 ACT 0.1965 0.1895 1-1/4 5 6 Uncoated 22
    $31.71
  • A50444 ACT 7.0mm 0.2756 7.000 1-1/8 3-1/4 47mm 0.0300 6 Uncoated 15
    $87.33
  • A51801 ACT 0.197 0.1895 1-1/4 5 6 Uncoated 16
    $31.71
  • A50445 ACT 0.2760 0.2760 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 22
    $80.16
  • A51802 ACT 0.1975 0.1895 1-1/4 5 6 Uncoated 19
    $31.71
  • A50446 ACT J 0.2770 0.2770 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 11
    $80.16
  • A78704 ACT 29/32 0.9063 0.749 2-5/8 10 8 Uncoated 3
    $115.28
  • A51803 ACT 0.198 0.1895 1-1/4 5 6 Uncoated 48
    $31.71
  • A50447 ACT 0.2780 0.2780 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 19
    $80.16
  • A51804 ACT 0.1985 0.1895 1-1/4 5 6 Uncoated 12
    $31.71
  • A50448 ACT 0.2790 0.2790 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 13
    $80.16
  • A51805 ACT 0.1995 0.1945 1-1/4 5 6 Uncoated 13
    $31.71
  • A50449 ACT 0.2800 0.2800 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 23
    $80.16
  • A51806 ACT 0.2 0.1945 1-1/4 5 6 Uncoated 24
    $31.71
  • A50450 ACT K 0.2810 0.2810 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 17
    $80.16
  • A53514 ACT 1-1/16 1.0625 0.874 2-3/4 10-1/2 8 Uncoated Available to Order*
    $116.31
  • A51807 ACT 0.2005 0.1945 1-1/4 5 6 Uncoated 12
    $31.71
  • A50451 ACT 9/32 0.2812 0.2812 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 29
    $71.99
  • A51808 ACT 0.2015 0.1945 1-1/4 5 6 Uncoated 23
    $31.71
  • A50452 ACT 0.2820 0.2820 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 13
    $80.16
  • A51809 ACT 0.202 0.1945 1-1/4 5 6 Uncoated 20
    $31.71
  • A50453 ACT 0.2830 0.2830 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 19
    $80.16
  • A78705 ACT 1-3/16 1.1875 0.999 2-7/8 11 10 Uncoated 13
    $170.57
  • A51810 ACT 0.2025 0.1945 1-1/4 5 6 Uncoated 16
    $31.71
  • A50454 ACT 0.2840 0.2840 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 4
    $80.16
  • A51811 ACT 0.203 0.1945 1-1/4 5 6 Uncoated 16
    $31.71
  • A50455 ACT 0.2850 0.2850 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 19
    $80.16
  • A51812 ACT 0.2035 0.1945 1-1/4 5 6 Uncoated 23
    $30.92
  • A50456 ACT 0.2860 0.2860 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 9
    $80.16
  • A51813 ACT 0.2045 0.2016 1-1/4 5 6 Uncoated 16
    $30.92
  • A50457 ACT 0.2870 0.2870 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 11
    $80.16
  • A51814 ACT 0.205 0.2016 1-1/4 5 6 Uncoated 14
    $30.92
  • A50458 ACT 0.2880 0.2880 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 12
    $79.71
  • A51815 ACT 0.206 0.2016 1-1/4 5 6 Uncoated 15
    $30.92
  • A50459 ACT 0.2890 0.2890 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 14
    $79.71
  • A51816 ACT 0.2065 0.2016 1-1/4 5 6 Uncoated 8
    $30.92
  • A50460 ACT L 0.2900 0.2900 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 65
    $80.16

* Lead times can vary from 1–10 business days. Call (908) 98-ATLAS or email sales@atlascuttingtools.com for details.

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